Need to use 'do_div' macro for 64-bit division.

diff --git a/comedi/drivers/amplc_pci230.c b/comedi/drivers/amplc_pci230.c
index d10b6f749e9930a7aa8bd055f9417bcdf61be246..ed7df772815d51b3f370307b66f1f45d5ab696c5 100644 (file)
--- a/comedi/drivers/amplc_pci230.c
+++ b/comedi/drivers/amplc_pci230.c
@@ -1649,13 +1649,13 @@ static void pci230_setup_monostable_ct(comedi_device * dev, unsigned int ct,
 {
        unsigned int clk_src;
        unsigned int divisor;
+       uint64_t temp64;
 
        clk_src = pci230_choose_clk_src(ns);
 
-       divisor = ns / pci230_timebase[clk_src];
-       if (divisor > 65536) {
-               divisor = 65536;
-       }
+       temp64 = ns;
+       do_div(temp64, pci230_timebase[clk_src]);
+       divisor = (temp64 > 65536) ? 65536 : temp64;
 
        i8254_load(devpriv->iobase1 + PCI230_Z2_CT_BASE, 0, ct, divisor, 1);
        /* Counter ct, divisor, mode 1 */